13705147 has 2 divisors, whose sum is σ = 13705148. Its totient is φ = 13705146.

The previous prime is 13705117. The next prime is 13705163. The reversal of 13705147 is 74150731.

It is a strong prime.

It is an emirp because it is prime and its reverse (74150731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13705147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13705117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6852573 + 6852574.

It is an arithmetic number, because the mean of its divisors is an integer number (6852574).

Almost surely, 2^13705147 is an apocalyptic number.

13705147 is a deficient number, since it is larger than the sum of its proper divisors (1).

13705147 is an equidigital number, since it uses as much as digits as its factorization.

13705147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 13705147 is about 3702.0463260202. The cubic root of 13705147 is about 239.3102126590.

Adding to 13705147 its reverse (74150731), we get a palindrome (87855878).

The spelling of 13705147 in words is "thirteen million, seven hundred five thousand, one hundred forty-seven".